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PACKET FOLDING MACHINE. No. 377,669

Patented Feb. 7, 1888.

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PAGKET FOLDING MACHINE.

N0. 377,669. b Patented Feb. 7, 1888.

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No. 377,669. Patented Feb. 7', 1888.

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No. 377,669. 1C Patented Feb. 7, 1888.

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- PACKET FOLDING MACHINE.

No. 377,669. Patented Feb. 7, 1838.

a in the process of folding the sheet, and will be more fully explainedhereinafter, Fig. 12 show- UNITED STATES PATENT OFFICE GEORGE E. DEFREEST AND GEORGE W. WYNKOOP, OF TROY, NEW YORK.

PACKET-FOLDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 377,669, dated February7, 1888.

Application filed October 21, 1886. Serial No. 216,826. (No model.)

To aZZ whom it may concern:

Be it known that we, GEORGE E. DE FREEST and GEORGE W. WYNxooP,residents of the city of Troy, in the county of Rensselaer and State ofNew York, have invented certain new and useful Improvements inPacket-Folding Machines; and we do hereby declare that the following isa full, clear, and exact description of theinvention, that will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompany'ing drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

Similar letters refer to similar parts in the sev'eral'figures therein.

Our invention relates to improvements in packet-folding machines; and itconsists of the novel construction and combination of parts, hereinafterdescribed, and pointed out in the claims.

The objects of the several parts and combinations are fully set forth inconnection with the following description, the general object of theinvention being to fold a sheet of paper or similar material upon asmall quantity of fine or powdered substance inclosed therein to form asmall powder-packet, like or similar to those employed by physicians indispensing medical powders. 7

Figure 1 of the drawings is a side elevation of our improved machine,certain parts being removed. Fig. 2 is an enlarged View of a portionofthe same. Fig. 3 is a side elevation of the side opposite to thatshown in Fig. 1,with a portion of the frame broken away to better showthe. interior. Figs. 4 and 5 are respectively end and side views of anend-folding mechanism detached. Fig. 6 is a top plan view of themachine, as shown in Figs. 1 and 3, except that the frame is not shownbroken and the paper is removed. Fig. 7 is a plan View of a sheet ofpaper or similar material of the desired shape to form a packet. Figs.8, 9,10, 11, and 12 illustrate the different stages ing, as thelaststage, the end folds of the packet and the end-folding mechanisms. Fig.13 is a top plan view of the frame and stops or cams secured thereto,which serve to direct the movements of the mechanisms traveling with.els in the direction of the arrows.

the table. (Not shown in this figure.) Fig. 14. isa side elevation of apart of the device,

described. The feeding device is also provided with means forperforating the paper strips and tearing offfsheets'where markedsuitably to form the packets.

A is the bed-plate of the machine,-andA the frame which supports thecarrying-table 7o B. We have shown the table cylindrical in form andrevoluble upon axle B, being conneoted with hub B Figr'15, by radialarms or spokes B.

showing the position of the packet relatively 55 iVedo not wish to belimited to any particular form or line of movement of the table, as any7 well-known form'of carrying-table may be em ployed. I The frame may beof any convenient form to support the devices coacting with comple- 8cmental devices upon the moving table. We have shown the frame providedwith an annular rim on each side of the table,extending upward to aboutthe same height and correspond- 1 .ing with the table in circumferentialsize and 8 5 form. The standards 0, secured to the baseplate, supportbya mandrel, O apaper strip, 0 in the form of a roll, 0 The strip ispassed through an openingbetween the bar a and the bar or rod a, andcarried up so that 0 its end rests upon the table, as shown-in Figs. 1and 3, where it is held by the spring a Figs. 1 and 6, (not shown inFig. 3,) until the retaining-clamps D D grasp it and cause it to partakeof the motion of the table which trav- The clamps are pivoted uponsuitable hangers on the lower side of the table and rest in slots in thetable,

Fig. 15. They are actuated by springs D and controlled by cams or lugs DD, and'D 'located at desired intervals on the frame. 'Be-, fore theclamps reach the paper to engage therewith the latter is weakened byperforations or cuts produced by the vibratory serrated knife E. Theknife is vibrated by a rock shaft, E, providedwith an arm, Eflwhiehengages with the knife, and an arm, E projecting out to or near thecarrying-table,where 5 it will be tripped by trip E, which forces thepoints of the knife int-o or through the paper, weakening the same, sothat under tension it will tear easily and along the line ofperforations.

One end of the lever Eflpivoted to the frame, broken away at this point,rests upon arm E and is elevated by the movement last described, whilethe other end is depressed to or near the table, to be engaged andraised by the 1 same trip, E, which forces the arm E down again andwithdraws the knife to the position shown by the solid lines, the limitof vibration being indicated by the dotted lines, the'function of leverE being to give the knife a posi- 2o tive backward movement.

As shown in the drawings, the knife is acted upon more than one-half ofa revolution of the table in advance of the engagement of the clampswith the paper. As the revolution of 2 the table carries the clamps pastthe cams D and D, they are thrown up from the table and back from .thepaper, as shown by the dotted lines in Figs. 1 and 15, so that when thelower arms of the clamps slide from the cams the clamps are forced bytheir actuating-springs D down upon the paper,and, pressing it firmlyupon the surface of the table, retain it and cause it to partake of themotion of the table. This position is shown by the second series of 5dotted lines in Fig. 1, a portion of the paper being also shown bydotted lines 0 within the clamps. Then, as thetable advances, it unrollsthe roll of paper,winding itupon the table until the trip F, fixed uponthe table, trips the arm F 0 of lever F pivoted upon a fixed support andcarrying upon its other arm a presser-bar, F which acts to press thestrip of paper so tightly against the bar a as to detain the strip untilthe sheet S is torn off, being torn at the line of indentations orperforations, the limit of vibration being shown by dotted lines. Whenthe sheet is thus separated, the line of indent-ations is somewhatfarther on or above the point or line where the spring a presses thepaper. As soon as the trip has passed the arm F, the latter is releasedand the pressure removed, the table sliding along under the strip, whichis held in place by the spring a, as before described. As the tableadvances in its revolution it takes with it the sheet S.

The lever G, pivoted upon the table and oecupying about the positionshown by dotted lines 1, strikes at its lower end the trip G, fixed uponthe frame, which forces the lever to about the position shown by thesolid lines.

As this is the position of the machine we have chosen for the drawings,the other parts of the machine occupy at this time the respectivepositions shown by the solid lines.

The lever G is fixed upon the axle H,which may be a rod extendingtransversely across the table, rotative in the bearings H fixed one uponeach side of the table; or the axle may be in two parts riveted to oneside and edge of the apron or hinged leaf H, as shown.

The hinged leaf is adapted to rest in a depression or well, H in thetable, so that its exposed side is then about flush with the'surface ofthe table. It follows, therefore, that the leaf H will partake of themovements of the lever G, and will be thrown up to the position shown bythe solid lines,whieh posit-ion is about radial to the cylindrical tableand take with it that side of the paper sheet just torn from the strip.The sheet will then occupythe position shown by the heavy solid line S.The other side, which is the one on the right, as seen in Figs. 1 and 2,was lifted from the table by the apron I,whieh extends transversely ofthe table, and is secured to a pivoted rod adapted to slide and rotatein slots I in supports fixed to the machineframe, one on each side ofthe table. The pivoted bar is also provided with cam-engaging arm 1adapted to engage with the cam 1 fixed upon the table. The solid linesshow the arm I lifted by. cam 1 on which it will ride until the end ofthe leaf H passes under the apron, hereinafter more fully explained, thelatter having been lifted from the table to the position shown by thesolid lines.

In Fig. 6 the apron is shown still further lifted, so that it will beseen projecting beyond the parts above it. As the leaf H is shownin aposition about right angular to the surface of the table and inclinedconsiderably from a vertical position, the sheet is given a troughlikeshape convenient to receive the powder V, as shown, which is depositedtherein by hand or from a hopper, as desired.

It is apparent that the carrying-table should be retained in theposition shown by the solid lines long enough for the powder to bedeposited on the sheet, and we have provided means for stopping thetable at the exact place required. The axle B, which supports and movesthetable, is provided with a crank, J, fixed thereon, and having ahandle, J, by which the table is moved. The crank is also provided witha slide-bolt, Ji, actuated by spring J and adapted to come in contactwith stop J, projecting from the bed-plate A, at the exact pointrequired to stop the table in the desired position; After the powder hasbeen deposited on the sheet,.the slide-bar is lifted by its handle Jabove the stop and the table set in motion.

IlO

As soon as the slide-bolt has passed the stop,

the handle J 5 is released,whereupon the spring forces the slide-boltdown again in a position to engage the stop at the proper time fordepositing the powder upon the next sheet. It is apparent that theslide-bolt may be secured to the table itself, or secured to thebed-plate in position to engage a stop upon the crank or table, as shownby dotted lines in Fig. 1,where the stop J is indicated as fixed to thetable and the slide-bolt lies on the bed A and passes through a staple,J, the point end of the bolt being turned up to catch the stop J as thetable revolves. Thus constructed, the bolt may be drawn back to releasethe table, causing aslight backward movement of the latter;

or the bolt may be so made that by turning the handle sidewise down onthe bed the catch on the end of bolt is also turned down out of the way.The lower end of the lever G,which was acted upon by the trip G, may bedesignated as the heel and the other,end as the toe.

to engage with the heel, but not with the toe, of

the lever; but the tripG is so far offset from the frame as to engagewith and trip the thinner toe of the lever,which it does just as thetable is stopped, as above described, and as shown in the drawings.

The action of trip G upon the lever is to change it from the positionshown in solid lines to that indicated by dotted lines 2,which forcesthe leaf H forward on the course indicated by the curved dotted line,thereby folding the sheet upon itself and inclosing the powder,the sheetbeing folded along the dotted line S, Fig. 7, and producing the fold SFigs. 8, 9, and 10. As the table advances the foldeddown edge of theleafand sheetpass under the lifted edge of. apron I, the other edge ofthesheet being forced by the apron down upon the leaf to form the fold SFigs. 9 and 10, the latter fold also passing under the apron. The partscontinue to advance in this position until the heel of lever G strikesthe trip G, secured to the frame, which throws the leaf up and backagain, so that it falls back into its well H in the table. I

The trip G is shown bydotted lines in Figs. 1 and 2 and by solid linesin Fig. 6. It pro- 0 jects inward from the frame over the path of tionshown by dotted lines I.

lever G, which passes under it as it is tripped. The position of thelever just after engagement with trip G is shown by dotted lines 3 inFig. 2, the corresponding position-of the leaf being shown by dottedlines H, in which position it has lifted the apron -I to the posi- Afterthe leaf has passed by the apron falls by gravity to the table again.The sheet containing the powder and having both edges folded down maynow be termed a packet; but just before the first fold of the sheet isreleased by the return movement of the leaf, caused bythe engagement ofthe lever with trip G,-the clamps D are opened by cams D to receive thefolded edge, and, passing by said cams just as the lever engages withtrip Gfithe springs close them down upon the top of the folded edge,thus changing the position of clamps D from that shown at the left ofthe rolls R R to that shown between the rolls in Fig. 14. The

packet then passes under the first press-roll R, which presses down andfixes the folds.-

As the packet passes under the first roll, the

v pins Kare forced up through corresponding slots in the table to aboutthe position shown by dotted. lines in Figs. 2 and 14, lifting the foldS and causing itto pass up over the second press-roll, R, as shown inFig. 14. The I pins are secured tocross-bar K, which is secured at ornear each end to an arm, K pivoted to hangers secured to the lower sideof the table. One of the arms is adapted to engage with a lug, Kprojecting from the frame A, by which the pins are forced up through thetable, as described. The device is partly shown in Fig. 15, 't-he otherand similar part extending to the other side of the table being brokenaway to better show other devices. At about the same time that thelifter acts to lift the fold the clamps D engage with the cams D", whichopen the clamps and release the packet from their grasp, and they remainidle until brought into action .for the next packet. As the tableadvances and the clamp D approaches the roll R, the released fold Srides the roll, and is forced over by it onto fold S to produce the foldS Sincethe clamp D only includes the two plies forming the fold S it isnecessary to provide some means for keeping the upper ply of fold S downupon the other plies, or it would not be inclosed within the fold S Weprovide for this purpose a spring-controlled cam-operated pusher, P,pivoted upon one end of lever whereby it acts to push the upper andloose ply within the fold S as shown in Fig. 14. The packet'then passesunder press-roll R, which gives it the fold S (Shown in Fig. 10.)

Figs. 8, 9, and 10 are end views of the packet, and represent the pliesconsiderably exaggerated in thickness.

Figs. 11 and 12 represent a side edgcview of fold S slightly exaggeratedin thickness.

Various devices may be employed for folding over the ends of the packet.

in Fig. 12 we have indicated two devices, one at each end. The pointedfolder L, similar in form to a soil-plow, is secured to or forms part ofleg L, which is secured to the cross-bar L, attached to frame A. Thepoint of the folder L-passes under the end of the packet, lifting itfrom the table, and asthe folder advances it folds the end of the packetover onto the guide-plate M, which is secured by shank M to thecross-bar L", substantially as shown. At the other end we have indicatedby dotted lines in Fig. 12 the'movements of cam-operatedlever N. (Shownfully in Figs. 6 and 15.) The lever'N is similar in form to clamps D D.pin N, passing through hangers-N secured to the lower side of the table.The fulcrum-pin passes through a slot inthe lever, as shown in Itiscentrally fulcrumed upon.

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Fig. 15, and the lowerend, N of the' lever is adapted to engage with alifting and tilting cam, N N", fixed upon frame A, partly shown by anend view in Fig. 15 and separately shown by plan view in Fig. 13, alsoin Figs. 12 and 3 by side elevations. The arm N", secured to the frame,supports the lifting-cam N, which is shown riveted or screwed upon it,and the tilting cams N are secured to or integral with cam 1 As thelower end, N of folding-lever N,'in advancing with the table,strikes thecam N at about the position shown by the first dotted circle N on theleft in Fig. 13, it is forced upward or lifted, and when it strikes theinner cam, N, it is tilted, so that when it reaches the positionindicated by the next dotted circle N in Fig. 13 it occupies theposition shown by dotted lines in Fig. 15, having traveled over the pathindicated by the dotted arrow in Figs. 15 and 12. When it passes by thelifting-cam, it drops, and in passing to the third dotted circle N, Fig.13, it is forced by the tilting cams back to the position shown by solidlines in Fig. 15 and by dotted lines in Figs. 1 and 2.

It will be seen from an inspection of Fig. 2 that just as the levcr-armN strikes the lifting-cam N the arms of clamps D strike the cams D, sothat the ends of the packet are revleased from the clamps just as thepacket ends are raised by the end-folders. After the folding-lever hasfolded the end over the guideplate M and just as it drops offthelifting-cam N it reaches the press-ro1lL ,as shown partly by dottedlines in Figs. 1 and 2. The packet is then caught by the roll and theend closely folded down. The roll L is like the roll L, and is securedto hanger L".

To prevent the packet from slipping back on the table after it isreleased from the clamps, we provide what may be termed a packetpusher,which is forced up through the table immediately behind the packet, andforces the packet along before it beneath the guide plates M and pressrolls L and L The pusher may be of any convenient form-as a bar, (I,secured at each end to supports (1, secured to one end of arms d whichare pivoted at their other ends to the table or a projection therefrom,as spoke B. One of the supports d is provided with a lug, d", adapted toengage with the cam d, supported at one end by the fixed arm N and atthe other end by the fixed arm (1 Fig. 13. It will be observed in Fig. 2that this cam is lo cated to act upon the pusher continuously as itpasses between the guide-plates M and rolls L L, and is of suflicientlength to keep the pusher above the surface of the table, as shown bydotted lines, from the time that the packet is released from clamps Duntil the last pressrolls have acted upon it and finished the operationof forming the packet, after which the packet is removed from the tableby gravity or otherwise, and the springs d draw the pusher down againstadjustable stop (J1! and into its containing-slot in the table to theposition shown in Fig. 6. The table may then be revolved until theretaining-clamps again advance to and seize upon the paper strip, asbefore described.

It is not new in itself to perforate, indent, or cut a strip of papertransversely, whereby sheets may be torn off as required, and any of thewell-known methods or devices heretofore employed for this purpose maybe used in connection with our folding-machine.

We do not wish to be limited to any particular form or shape of thevarious parts employed to make up the complete machine.

We do not wish to be limited to any particular method of operating theretainingclamps, as they may be operated by hand or by any of thewell-known devices for actuating and controlling levers.

The individual cams may be united in one continuous cam, having a grooveor track in which the arms of the clamps are adapted to travel,substantially as shown by dotted lines in Fig. 13, said groove actuatingas well as controlling said clamps, substantially as the folding-lever Nis actuated and controlled, in which case the clamps could be made ofsome elastic or yielding material to compensate for any irregularitiesin the surfaces of the camgroove.

It will be readily understood that the surface of the table between thepacket-retaining clamps may be somewhat depressed when desired toreceive the packet, whereby it is more securely held in position andmore easily forced under the press-rolls; or the rolls may be providedwith yielding bearings, such as are in common use.

The word cam is used generically in the claims to'cover trips andactuating-lugs.

That we claim as new, and desire to secure by Letters Patent, is-

1. In a packet-folding machine, in combination with a carrying-table,spring-clamps carried by the table, and a series of fixed cams extendingunder the table and constructed and arranged to open said clampstogether at certain stages of operation and some of them at other stagesof operation, substantially as and for the purposes described.

2. In a folding machine, a carrying table provided with a hingedleaf, H,having a lever, G, connected therewith, in combination with trippingdevices G and G fixed to the frame, the parts being so constructed thatthe tripping devices severally engage each with a different end of saidlever, substantially as set forth, for the purposes specified.

3. In combination with acarrying-table provided with retaining-clampsand a cam, an oscillatory sheet-lifting apron, I, which is verticallymovable between fixed supports and operated by contact with cam,substantially as set forth and described.

4. In combination witha carrying-tableprovided with cam F, the movablelifting-apron I, provided with bent arm I, and fixed slotted supports,substantiallyas and for the purposes set forth.

5. In combination with pusher P, carried by pivoted levers P, providedwith arm P, a spring-rod adapted to bear against the pusher, one or morepress-rolls, and a carrying-table provided with a cam to engagewith armP Is ubsitantially as described, for the purposes set Ort 6. In apacket-folding machine, the combination, with a carrying table, ofretainingclamps, a presserroll, and a cam-operated lifting device, aspins K, movably secured to said table, substantially as and for thepurpose de: scribed.

7. In combination with acarrying-table,folding devices N, movablysecured to the table and provided with retaining-springs, and fixed camsN NE, constructed to lift folders N and bring them to inclinedpositions, substantially as set forth and described.

8. In combination with the moving carrying-table of a folding-machine, apushing device consisting of a bar, d, secured to supports d, carried bypivoted arms (1, and a fixed cam, d, in position to raise the pusherthrough an opening in the table, substantially as set forth, for thepurpose specified.

9. In combination with acarrying-tablehaving a trip, E,aperforating-knife which is movable in fixed bearings, a pivoted lever, Eand a rock-shaftprovided with two projecting arms, one, of which engageswith the perforatingknife and the other with said lever, substantiallyas and for the purposes described.

10. In combination with a carrying table provided with a trip, F, afixed bar, a, an adj acent presser-bar carried by pivoted levers Fprovided with an arm constructed to engage with trip F, substantially asset forth and described. a

11. In combination with the carrying-table provided with ahinged foldingleaf and means, substantially as described, for lifting it, a movablebolt constructed and arranged to stop the movement of the table when theleaf has been swung upward, substantially as and for the

